diff options
| author | Yannick Fertre <yannick.fertre@foss.st.com> | 2022-06-03 16:44:59 +0300 |
|---|---|---|
| committer | Philippe Cornu <philippe.cornu@foss.st.com> | 2022-06-27 17:01:17 +0300 |
| commit | 62467fccb73fb700d23c35fcac71cb0cf0662ddb (patch) | |
| tree | ef807bd0b67f3b0bf9a05a07d449a0bd5bdba2c6 /drivers/gpu/drm/stm | |
| parent | 44b4e7282249903a3f9689da3fd26fc9cf7c5d2c (diff) | |
| download | linux-62467fccb73fb700d23c35fcac71cb0cf0662ddb.tar.xz | |
drm/stm: ltdc: add support of the dynamic z-order
Zpos property is immutable for all hardware versions except the last
version (0x40100) which support the blending order feature
(dynamic z-order).
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220603134459.593379-1-yannick.fertre@foss.st.com
Diffstat (limited to 'drivers/gpu/drm/stm')
| -rw-r--r-- | drivers/gpu/drm/stm/drv.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.c | 23 | ||||
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.h | 1 |
3 files changed, 22 insertions, 3 deletions
diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c index 0da7cce2a1a2..c63945dc2260 100644 --- a/drivers/gpu/drm/stm/drv.c +++ b/drivers/gpu/drm/stm/drv.c @@ -95,6 +95,7 @@ static int drv_load(struct drm_device *ddev) ddev->mode_config.max_width = STM_MAX_FB_WIDTH; ddev->mode_config.max_height = STM_MAX_FB_HEIGHT; ddev->mode_config.funcs = &drv_mode_config_funcs; + ddev->mode_config.normalize_zpos = true; ret = ltdc_load(ddev); if (ret) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 18149ca1519b..359414c10621 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -197,6 +197,7 @@ #define LXBFCR_BF2 GENMASK(2, 0) /* Blending Factor 2 */ #define LXBFCR_BF1 GENMASK(10, 8) /* Blending Factor 1 */ +#define LXBFCR_BOR GENMASK(18, 16) /* Blending ORder */ #define LXCFBLR_CFBLL GENMASK(12, 0) /* Color Frame Buffer Line Length */ #define LXCFBLR_CFBP GENMASK(28, 16) /* Color Frame Buffer Pitch in bytes */ @@ -1312,7 +1313,14 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, plane->type != DRM_PLANE_TYPE_PRIMARY) val = BF1_PAXCA | BF2_1PAXCA; - regmap_write_bits(ldev->regmap, LTDC_L1BFCR + lofs, LXBFCR_BF2 | LXBFCR_BF1, val); + if (ldev->caps.dynamic_zorder) { + val |= (newstate->normalized_zpos << 16); + regmap_write_bits(ldev->regmap, LTDC_L1BFCR + lofs, + LXBFCR_BF2 | LXBFCR_BF1 | LXBFCR_BOR, val); + } else { + regmap_write_bits(ldev->regmap, LTDC_L1BFCR + lofs, + LXBFCR_BF2 | LXBFCR_BF1, val); + } /* Configures the frame buffer line number */ line_number = y1 - y0 + 1; @@ -1581,7 +1589,10 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) return -EINVAL; } - drm_plane_create_zpos_immutable_property(primary, 0); + if (ldev->caps.dynamic_zorder) + drm_plane_create_zpos_property(primary, 0, 0, ldev->caps.nb_layers - 1); + else + drm_plane_create_zpos_immutable_property(primary, 0); /* Init CRTC according to its hardware features */ if (ldev->caps.crc) @@ -1610,7 +1621,10 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) DRM_ERROR("Can not create overlay plane %d\n", i); goto cleanup; } - drm_plane_create_zpos_immutable_property(overlay, i); + if (ldev->caps.dynamic_zorder) + drm_plane_create_zpos_property(overlay, i, 0, ldev->caps.nb_layers - 1); + else + drm_plane_create_zpos_immutable_property(overlay, i); } return 0; @@ -1740,6 +1754,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.ycbcr_output = false; ldev->caps.plane_reg_shadow = false; ldev->caps.crc = false; + ldev->caps.dynamic_zorder = false; break; case HWVER_20101: ldev->caps.layer_ofs = LAY_OFS_0; @@ -1755,6 +1770,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.ycbcr_output = false; ldev->caps.plane_reg_shadow = false; ldev->caps.crc = false; + ldev->caps.dynamic_zorder = false; break; case HWVER_40100: ldev->caps.layer_ofs = LAY_OFS_1; @@ -1770,6 +1786,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.ycbcr_output = true; ldev->caps.plane_reg_shadow = true; ldev->caps.crc = true; + ldev->caps.dynamic_zorder = true; break; default: return -ENODEV; diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h index 59fc5d1bbbab..4855898bd4c0 100644 --- a/drivers/gpu/drm/stm/ltdc.h +++ b/drivers/gpu/drm/stm/ltdc.h @@ -28,6 +28,7 @@ struct ltdc_caps { bool ycbcr_output; /* ycbcr output converter supported */ bool plane_reg_shadow; /* plane shadow registers ability */ bool crc; /* cyclic redundancy check supported */ + bool dynamic_zorder; /* dynamic z-order */ }; #define LTDC_MAX_LAYER 4 |